on all newbies-servers the same skin-files are installed - this would mean that you use an older Male3MegaSkin file in your system/textures folder - yet i'm a bit surprised, since you could connect to the contest server, which is basically using same files as jackals coop.
i've attached the latest Male3MegaSkin files - please extract and copy the .int file to your system-folder and the .utx to your textures folder. please report, if that fixed your issue - otherwise i can only think of a corruped cache-file >>> to check this: temporarily rename the "cache"-folder (to "cache-backup" e.g.) and then try to connect to the server....

best regards!
WOOF! WOOF!

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So I renamed the cache folder and on trying to enter the game, it created a new cache and downloaded several things including male3megaskin and I was able to enter the game.

I then checked in the original cache for cache.ini and it showed:

3149985C4FFFEB63F5AB82849EF6FB1E=Male3MegaSkin

I then compared 3149985C4FFFEB63F5AB82849EF6FB1E in the original cache to the new created cache's version and the size was the same.

I then removed the new cache folder and restored the original cache folder and tried again and I was also able to enter the game. All is back as it was and I no longer have the problem. I have no idea what happened, but all is ok now!? Thanks for your help.

i forgot about the forum user permissions - sorry!
well, it's kind of strange, since i used a copy of current jackals coop server as a basis for all the contest servers. therefor the skin-files should have been identical.... ?!?

OK, I've more information on the problem which is still there for me.
I have not been able (and am still unable) to "observe" in the contest servers.
Whenever I try to observe, I get the error message.
Thereafter when I try to play (non-observe), I also get refused on all the Dog servers with the error message.
Mucking about for a while clears the playing problem, but not for the "observe".

yes, the contest servers are shut down again. since the contest-servers basically used jackals-coop, the issue is really strange, so it'd be interesting if your log would show anything on this. if possible, please mail me the unreal.log. thank you!

I'm a bit curious.
Did the problem occur when you connected to a server right after start of your game, or did it occur when you tried to change the server?
I mean for example, you first were on Jackals coop and then tried to join the contest servers or the opposite.
I assume you use the skin package and not having it only in your cache folder.
In case it should happen again you could try the following:
1. Remove your Cache to a safe place (plus the Cache.ini), also delete the skin package from your Texture folder.
2. Connect to Jackals coop and wait until all standard files are downloaded.
3. Close your Unreal and check the new Cache.ini for the skin package.
4. Rename this cache file to: Male3MegaSkin.utx and move it to your Texture folder.
5. Delete the new created Cache and move the before saved Cache back.

If the problem still should occur please compare the file size of the package with this value: 4.275.487 Bytes
and leave a short note here.

£éè£å-(DOG)-
I started Unreal and tried to connect to a server, to play a game, it rejected me and informed me of the mismatch.
Turning off Unreal and restarting it did not help - problem still there.
After checking as I mentioned previously, the problem went away.
I tried to enter the test server as observer, it rejected me again with the error message and also on the other game servers.
Making the checking moves removed the problem and I never tried again to enter as observer on the test server.

Try this FUD Rename cache folder Make new empty cache folder. Enter game .Exit game Then copy files in cache folder to original cache folder. Delete new cache folder and then rename original cache folder back to cache. I had this same problem and this solved the problem MAybe it will work for you too.

So in trying to join the server I also got mismatch files. I renamed my cache folder, deleted all my cache, installed all ultimate cache from scratch and nothing seems to work. Still get mismatched files even though I don't have any. Haven't tried to reinstall unreal but it's so touchy to get it to work just right lol Any ideas?

you probably got some old skin-files in your unreal/system and /texture folder....
i will send you a private message containing the link to a fresh unreal installation. use that and copy over your cache-folder. if you use any newbies-skin, download the latest public skin packs or if you use a private skin, please send me the package you use, so i can mail you the current one....